National Science Olympiad Forum By SOF Olympiad Trainer - Page 656

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
B is the answer because like poles repel.

Ans 2:

Class : Class 10
the fig is wrong because the in the fig there should be repeltion and they have given attraction.

Ans 3:

Class : Class 6
Tricky

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Subject :NSO    Class : Class 6

Read the given statements and select the correct option.
Statement 1 : The level of groundwater below the surface of Earth at a given place is known as the water table.
Statement 2 : Extensive use of groundwater in cities for domestic and industrial purposes is resulting in lowering of water table.

A Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true but statement 2 is false.
D Both statements 1 and 2 are false.


Ans 1:

Class : Class 8

Ans 2:

Class : Class 8

Ans 3:

Class : Class 8
Anybody has an explanation?

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
I’m saying the same term of Anush nikam

Ans 2:

Class : Class 3
Its a Mosquito. It sucks blood. The answer is A.

Ans 3:

Class : Class 6
D

Ans 4:

Class : Class 6

Ans 5:

Class : Class 3
It’s mosquito..it sucks blood so answer is A

Ans 6:

Class : Class 3
The correct ans is D

Ans 7:

Class : Class 3
C'mon . In correct answer they are showing B and in solution they are showing A . I mean , at least somebody should check the system for errors

Ans 8:

Class : Class 3

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 4
Answer is = D

Ans 2:

Class : Class 5
answer is d because core is innermost layer of earth so it could be made up of nicel and iron

Ans 3:

Class : Class 7
ANSWER IS 'D'

Ans 4:

Class : Class 5
you all are mads. D , A are correct options

Ans 5: (Master Answer)

Class : Class 1

Ans 6:

Class : Class 5
answer is D

Ans 7:

Class : Class 5
P is made up of iron so a is wrong

Ans 8:

Class : Class 5
no c is correct ans

Ans 9:

Class : Class 7
A and D. are the correct answer

Ans 10:

Class : Class 4
P is the molten part made up of nickel and iron(p is not molten). R is the hottest part of Earth which is solid( P is the hottest part of Earth which is solid).Q is connected to surface with the help of volcanoes( R actually has magma in it ). Minerals and oil deposits are found in the part S. and option D is only corect

Ans 11:

Class : Class 5
ans is d

Ans 12:

Class : Class 1
I do not think that all answers and words of synopsis is correct

Ans 13:

Class : Class 3
you fools i found the correct answer d

Ans 14:

Class : Class 7
sof is dumb nearly all answers are given wrong

Ans 15:

Class : Class 7
Class:Class:Class:VERY HARD

Ans 16:

Class : Class 6
Correct option is D because mineral deposits are found on the crust of the Earth

Ans 17:

Class : Class 8
you are correct it doesnt update it self every year

Ans 18:

Class : Class 5
they give two answer correct and but one of the two are the right answers

Ans 19:

Class : Class 6
ans d

Ans 20:

Class : Class 7
d correct ans

Ans 21:

Class : Class 7
The answer is D

Ans 22:

Class : Class 5
D

Ans 23:

Class : Class 6
D

Ans 24:

Class : Class 7
a c d are correct

Ans 25:

Class : Class 6
No, the inner core is actually made up of iron and nickel.

Ans 26:

Class : Class 5
D

Ans 27:

Class : Class 9
D drives me crazy

Ans 28:

Class : Class 1

Ans 29:

Class : Class 6
ans is d

Ans 30:

Class : Class 6

Ans 31:

Class : Class 5
D

Ans 32:

Class : Class 4
The answer is {D}

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Subject :NSO    Class : Class 5

A large area of forest was destroyed completely by forest fire. Which of the following statements hold(s) true regarding it?

(i) More soil will be eroded as the soil is not protected by trees from wind and rain.
(ii) The land will have more fresh air as there are lesser trees to take in oxygen.
(iii) Wildlife will inhabit the cleared area because more space is available now.
(iv) New trees will grow quickly to replace the burnt ones as the ash of the burnt trees will make the soil more fertile.

A (i) only
B (i) and (iv) only
C (i), (ii) and (iv) only
D (i), (ii), (iii) and (iv)


the answer should be option B not A because ash does act like a natural fertiliser ,. I have already searched on the internet .

Ans 1:

Class : Class 7
WHAT! B is correct, not A. The answer is B, NOT A!

Ans 2:

Class : Class 7
THe AntwerpThe answer is (A) because if forest fire occurs there will not be any trees and soil erosion can happen and All the ashes including soil may erode and then how can it make the soil fertile

Ans 3:

Class : Class 6
ddddddd

Ans 4:

Class : Class 8
Ash is an organic matter so the answer should be B

Ans 5:

Class : Class 5
B B B B B B . B B B B B B BB BB B B B B B . IS THE ANSWER

Ans 6:

Class : Class 5
yes B is the answer as the ash contains minerals from the other trees.. i agree that the process of nitrogen fixation will make the soil fertile.........

Ans 7:

Class : Class 7
B is the answer!

Ans 8:

Class : Class 6
I think the answer should be b as after a forest gets destroyed by a forest fire ,new trees will grow as the remain of the trees will decompose and make the sol fertile.

Ans 9:

Class : Class 7
I agree with Ishan as trees cannot grow very quickly...But I did B at my first attempt

Ans 10:

Class : Class 5
How ??? It should be b.As ash is an organic matter. the process of nitrogen fixation will make the soil fertile . Please tell .Why????

Ans 11:

Class : Class 5
The correct answer is Bthis time I think SOF is wrong

Ans 12:

Class : Class 9
B is the correct answer

Ans 13:

Class : Class 6
B should be the correct answer

Ans 14:

Class : Class 7
The answer should be B.

Ans 15: (Master Answer)

Class : Class 1

Ans 16:

Class : Class 5
BBBBBBBBBBBBBBBBBB IT IS THE CORRECT ANSWER I AGREE WITH THE OTHERS

Ans 17:

Class : Class 8
B IS THE CORRECT ANSWER AS BURNING OF WASTE CROPS AFTER HARVESTING OF GRAINS IS STANDARD METHOD OF INCREASING SOIL FERTILITY

Ans 18:

Class : Class 8
I think B is correct option as ash acts as a fertilizer for plants (even if in small quantities). Master Answer (Admin, Revisewise) EXPLAIN the answer to all of us.

Ans 19:

Class : Class 9

Ans 20:

Class : Class 7
SOF is giving wrong answers ! Does it ever thinks that by reading wrong things , we can get lesser marks in our exams ?!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1

Ans 21:

Class : Class 4
I think B is the correct answer

Ans 22:

Class : Class 5
The question and choices given are a bit tricky. The correct answer is A because the language of (iv) is deceptive and says "new trees will grow quickly to replace the burnt ones". You have to understand that "new trees" won't grow quickly, you can only sow small plants not trees.

Ans 23:

Class : Class 6
i think it should be B..as ash acts as a fertilizer.

Ans 24:

Class : Class 8
Answer is B as ash is an organic

Ans 25:

Class : Class 8
Answer must be B as it is organic and increases soil fertility.

Ans 26:

Class : Class 6
Come on Snigdha! The CORRECT ANSWER IS (B)! Ash makes soil fertile 'cause it's organic , dude! How will trees not grow?(P.S.- please don't think about Ash in Pokemon. Please, don't)🤦‍♂️🤦‍♂️

Ans 27:

Class : Class 6
Actually, forest fires lower the level of nitrogen in the soil. Since nitrogen quantities in the soil is extremely important for plant growth, lowered level of nitrogen is a big barrier in plant growth

Ans 28:

Class : Class 9
I agree ,B is the correct answer

Ans 29:

Class : Class 5

Ans 30:

Class : Class 7
BBBB IS THE ANSWER

Ans 31:

Class : Class 7
Harry?! What a fake! Harr potter is an adult!

Ans 32:

Class : Class 8
a is correct because there willbe soil erosion without trees

Ans 33:

Class : Class 5
the answer is B.

Ans 34:

Class : Class 7
i think the answer should be B because the statement 'New trees will grow quickly to replace the burnt ones as the ash of the burnt trees will make the soil more fertile' is also true

Ans 35:

Class : Class 7

Ans 36:

Class : Class 5
It is certainly B as ashes of any organic matter makes soil fertile.

Ans 37:

Class : Class 5

Ans 38:

Class : Class 9
I think the answer is B

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Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

Class : Class 1
The correct answer is A.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
Answer: C

Ans 2:

Class : Class 6
C

Ans 3:

Class : Class 5
ANSWER-C

Ans 4:

Class : Class 5
Answer-C

Ans 5:

Class : Class 5
answer b

Ans 6:

Class : Class 9

Ans 7:

Class : Class 8
Answer: C

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 9

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